GetMonitorInfoW function (winuser.h)

Article
02/22/2024

The GetMonitorInfo function retrieves information about a display monitor.

Syntax

BOOL GetMonitorInfoW(
  [in]  HMONITOR      hMonitor,
  [out] LPMONITORINFO lpmi
);

Parameters

[in] hMonitor

A handle to the display monitor of interest.

[out] lpmi

A pointer to a MONITORINFO or MONITORINFOEX structure that receives information about the specified display monitor.

You must set the cbSize member of the structure to sizeof(MONITORINFO) or sizeof(MONITORINFOEX) before calling the GetMonitorInfo function. Doing so lets the function determine the type of structure you are passing to it.

The MONITORINFOEX structure is a superset of the MONITORINFO structure. It has one additional member: a string that contains a name for the display monitor. Most applications have no use for a display monitor name, and so can save some bytes by using a MONITORINFO structure.

Return value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero.

Remarks

Note

The winuser.h header defines GetMonitorInfo as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	winuser.h (include Windows.h)
Library	User32.lib
DLL	User32.dll
API set	ext-ms-win-ntuser-sysparams-ext-l1-1-1 (introduced in Windows 10, version 10.0.14393)